I am experiencing issues with my 14K and 18K yellow gold alloys cracking. I suspect it’s an issue with annealing/quenching/forging/rolling the alloy rather than alloy composition but because of the deep, mosaic like crack structure it could also be from impurities.
I used Rio grande’s copper wire. It was advertised as .999 pure copper or CDA110. This means the only other alloy “component” in the copper was 0.04% Oxygen. I thought this would be pure enough but maybe not? The gold and silver were both .9999 and .999 bullion.
For those who make their own alloys, what source of copper are you using. I have cracking problems whenever I alloy gold and am pulling my hair out over getting workable alloys. If I absolutely must I will purchase commercial alloys but would strongly (very strongly) prefer to make my own alloy and I know it’s possible if only I can get some goddamn good enough copper damn it!